Heritage Sash Windows

Our Heritage Spring Sash and Box Sash Windows have been handcrafted in keeping with the traditional aesthetic of character properties, but meet regulations required of listed buildings and conservation areas.

As a timber sash windows London-based company, we have gained the wealth of experience needed to lead projects with strict conservation restrictions and are on-hand to help you navigate the process.

Our Heritage collection combines the charm of traditional timber windows with the energy efficiency and security needed in today’s world. The collection features lambs’ tongue and putty style bead mouldings and bars, angel locks for child safety, decorative horn details and slim frame sections. Available in both spiral balance or cords & weights options, with a single glaze 4mm glass or slimline 14mm glass.

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Technical Spring sash 138

Our Heritage Spring Sash Windows conceal the spring mechanism within their slimmer profiles, offering a flush finish.

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Technical Box sash 138

For a more traditional look, our Heritage Box Sash Windows have a thicker frame to hide the pulley mechanism.

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Bespoke

Crafted for individuality, each Nine Zero timber sash window reflects bespoke heritage charm tailored for contemporary performance.

Secure

Enhanced timber sash window security means Document Q and PAS 24 compliant, multi-point locks, and internally beaded glazing.

Sustainable

We use FSC-certified sustainable materials, recycle timber waste, and supply renewable energy to local communities as just a small part of our plan.

Quality

Using Engineered Redwood, Engineered Red Grandis and Abodo sustainable timber wherever possible, our products are made from the highest standard renewable wood.

Insulated

A wooden sash window is a natural insulator with little thermal conductivity, offering U-values as low as 1.0 W/m²K and reduced energy bills.

Easy clean

Timber sash windows feature low-maintenance design, simple frames and durable finishes for effortless cleaning and minimal maintenance.

Weatherproof

Resilient and built to last in all climates, Nine Zero timber windows meet BS 6375:2015 Parts 1 and 2 regulations for weathertightness.

Technical

Sustainability and extensive expertise are behind every Nine Zero action, ensuring the materials we select and the designs we craft are central to delivering unparalleled durability in our products.

Our dedication to excellence drives us to explore, test, and ultimately choose only the most exceptional quality timber materials, coupled with the industry’s most effective production techniques.

You’ll see our precision throughout our collection of detailed CAD drawings below, showcasing the meticulously designed profiles and features of each timber window and door product. Should you require further information or professional advice on your project, the knowledgeable Nine Zero team is ready to assist you.

Technical

Glass, hardware and colours

Nine Zero timber windows and doors come to life with our wide range of glazing options, designed to meet your specific requirements. Choose from slimline glazing ideal for historical restorations, and advanced acoustic glass to soften city living and create a tranquil home.

Style to suit with our extensive hardware selection, including sleek lifts, secure locks, durable fasteners and smooth pulleys in various finishes – all supported by our reliable 5-year warranty.

Mix or match with any colour scheme by choosing any RAL or heritage F&B shade, all guaranteed with a 10-year assurance on our expertly-painted finishes.

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Become a Nine Zero trade partner

Help us to help you. Nine Zero trade supply partners get personalised service, preferential rates, marketing support and direct access to our expert team. Email accounts@nine-zero.co.uk to find out more.

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Request a brochure

To explore our range of sustainable timber windows and doors and imagine the possibilities for your project, request a Nine Zero brochure by contacting our team today.